Not As Describe- how do I win this one

[leonid5000]

The buyer received this item and changed their dispute reason to Item Not As Described. Changing the reason automatically escalates the dispute to a claim, and we're looking into it to decide the outcome. Please respond with the information requested below

I got this one crazy buyer.. I sold item with ebay.. Usially buyers win so I wonder if there is a trick how to win...
There is one option
Disagree with claim. I would like to provide additional information.
(what info should I provide so I can win the case?)

[TMiles]

The best way is to agree with the claim and settle it by giving them a refund if they return the item. Sellers seldom win these claims, and even can lose their items. Many times, Paypal will refund the money to the buyer, without requiring a return. Why take the chance?

[SECondplaygames]

It all depends, is the item vero? If yes than I agree with Tmiles, If not than you have a much greater chance of winning. What was the item? I have won a few that I never expected to just based on professional replies and what catergory the items were in.